Onyx is the dark gem in the GradedGuard PSA Jewel line: a deep, glossy black frame with the polished sheen that sets Jewel apart from the matte Standard cases. It gives a graded card a sleek, premium border while the front stays fully clear for the PSA label and grade.

Jewel cases use the same rigid, scratch-resistant shell as the Standard line and stack flat with them, so you can mix finishes on one shelf. Fits standard-size PSA holders; slabs with added thickness or inserts are not guaranteed to fit.